Dump-car.



L B. RHODES.- ,"DUMP GAR. APPLICATION HLED. MAYI9, 19I6,.

Patented Feb. 12, 1918. 5 SHEETS-SHEEI' l.

mentor.

J. B. RHODES DUM P CAR.

APPLICATION FILED MAY19, 19161 v 1,256,163. v Patented Feb. 12,1918.

' 5 SHEETS-$HEI 2- muggig-Qi mm J. B. RHODES.

DUMP CAR.

APPLIC A'HOH FILED MAY19, I916 1,256,163. Patented Feb-12,1918, v

5 SHEETS-SHE 3.

Q 1. B. RHODES) DUMP CAR. APPLICATION FILED MAY 19, l9l6.

Patented Feb. 12, 1918:

5 SHEETS-SHEET 4- L-B. RHODES.

DUMP CAR. APPLICATION man MAY19fI9l6.

- Patented Feb. 12, 1918.

5 SHEETS-SHEEI' 5.

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UNITED STATES PATENT OFFICE.

JAY BYRON RHODES, 0F KAICAMAZOO, MICHIGAN, ASSIQNOR, TO W'IES'ZIJERN WHEELED SGRAPEB COMPANY, OF'AURORA, ILLINOIS, A CORPORATION OF ILI INOIS.

DUMP-CAR.

7 Specification of Letters Patent. Patented Feb. 12, 1918.

Application filed May 19, 1916. Serial No. 98,495.

To all whom it may concern: e it known that 1, JAY B. RHoDEs, a citizen of the United States, and a resident of Kalamazoo in the count of Kalamazoo and State of Michigan, have invented certain new and useful Improvements in Dump- Cars, of which the following is a specification, reference being had to the accompanying drawings. 1

vly invention relates to power-operated dump-cars in which the car bed is arranged to be tilted to discharge its'load at either side of the truck, the'tilting of the "bed in one direction or the other being eitected by vertically movable plungers mounted in cylinders at the opposite sides of the car, the cylinders being connected with some suitable source of supply of compressed air. In such cars it isn'ecessary to provide devices connectod with opposite sides of the car bed for-holding the bed in its normal or 'horizontal'position while receiving and transporting. the load, and means must be provided for releasing the locking or retaining device at the side opposite that at which-the load is to be dumped so that the dumping operation may be effected. When the .bed is restored to its horizontal position after dumping, provision must be made for preventing it from-moving beyond such position and tilting toward the opposite side. The object of my present invention is to provide improved mechanism for loelo ing the bed in its normal position, and for automatically releasing the locking devices at the appropriate side when the dumping mechanism is operated, without' releasing the lCcking devices at the opposite'side, so that when the car bed is restored to its nor mal position after dumping it will not move beyond a-horizontal position. I accomplish this-object as illustrated in thefdrawings .and as hereinafter described. 2V hat I regard as new is set forth in the claims.

In the accom panying -dra\vings,

Figure 1 is an end elevation of a car showing my improved. locking, devices, the position of the parts when the car bed-is tilted beix'ig shown in dotted lines;

Fl' 2 is a partial cross-section, illustratin t e locking devices more in detail; Fig.3 is a. partial plan view showing the "locking devices;

Fig. 4 is,..a""partial side elevation of one and ate car embodying my improvements;

tion not being line 55 of Fig. 4, showing the dumping cylinders and the connections by which the several operations are effected;

Fig. 6 is a similar view showing the car bed partly tilted; I

Fig. 7 is a detail illustrating the position of certain parts at a stage intermediate be tween the positions shown in Figs. 5 and 6;

Fig. 8 is an enlarged detail, being a partial plan View of the upper portion of the plunger-rod Fig. 9 is a View similar to Figs. 5 and 6, showing the position of the parts at the completion of the dumping operation;

Fig. 10 is a similar view showing the position of the parts at the completion of the operation-of restoring the bed to its normal position; I

Fig. 11 isa detail showing the construction of the inner end of one of the links which connect with and guide the thrustbars, and Fig. 12 is a top detail view showing one of the plunger cover plates, the plunger rod being in section.

Referring to the drawings,

12 indicates one of the trucks, which may be of any suitable construction,t wo of such trucks being ordinarily employed, connected by longitudinal I-heams "13, tormmg the under-frame of the car. Said under-frame carries a series of pedestals L1 arranged at. suitable intervals, upon which are mounted a car bed 15 by means of brackets 16 eonnectcd by pivots 17 with the pedestals 14. It will be understood that the construction illustrated is only one ofa varietyof ways in which the car may be pivotally mounted to be tilted'to discharge its load at either side of the car, my inven-i limited to mounting the car bed in" the particular way. shown and described; As the car is what may be termed I bilaterally symmetrical, the mechanism employed at one side being duplicated at the other; the reterence numerals used to indisate the parts at one side will be usedto indicate the corresponding parts at tl're'other side of the car with the addition o the eX- ponent a andit will not be nccessar there;

.fore, to specifically describe the parts at both sides of the car.

1818 indicate cylinders provided at opposite sides of the car; preferably at the longitudinal center thereof. These cy1inders are arranged to be supplied with compressed air, or other suitable fluid, in any approved 'way. 19 indicates a plunger mounted in the cylinder 18 and arranged .to be projected vertically when the operating fluid is admitted to the cylinder The plunger 19 is a cylinder closed at its lower end, and in it sinountcd a plunger rod 20 having a hearing at the lower end of the plunger and arranged to rock transversely of the car. The plunger is provided at its upper end with a rounded crosshead 21 having outwardlyprojecting lugs 22 and in\vardlyq'irojccting lugs 23, the lugs at each side of the cross-head 21 being spaced apart shown in Fig. 8. 24C indi-.

cates a pair of links pivotally connected at their outer ends with the end portions of the cross-head 21 and pivotally connected at their inner endswith the car frame concentrieally with the axis of the car bed, being mounted upon a pivot 9 carried by a bracket 10 which is secured upon the I beams 13, as shown in Fig. 4. These links operate to rock the plunger-rod 20 transversely of the car as the plunger is' moved into or out of its cylinder, as illustrated in Figs. 5 and (l. 26-27 indicate two members, which to- 1 gether form a thrust'bar, saidmember's being socket 33, as best shown in Fig. 5.

connected by a stop-hinge or knuckle joint of which 28- is the pintle or pivot. member 26 is, journaled in a suitable bearing provided in a block 29; carried at the under side of the car bed so that the said member may swing transverselyv Preferably said member is in the form o a frame, as shown in Fig. 4, The member 27 provided with :1 lug 30 at Its. ower inner margin by which itls connected with a link 31 having a slot- 25 at its inner end which receives the pivot 9, as shown in Fig. 5. At its lower end the member 27 carriesa head 32-, in the lower surface of which is a rounded hearing or Said head at its outer margin carries a finger 34, the inner surface of which is convex, as

' also shown in Fig. 5.. The purpose of this arrangement will be hereinafter set forth.

The joint of the thrust-bar composed of themembers26-27 is so arranged that it may break inwaully, but not outwardly.

That is to say, the abutting ends of the membe'rs26j27 may swing toward the Of the ,ca'r'but cannot'more outwanlly be yond a position in alinemcnt with each other. This will be apparent from an inspection of the parts in Fig. 6. The head 32 is in position to be engaged by the cross- I head 21 when the latter is carried upward by the projectioi of its plunger, and said head is swung outward I by the link 24, the socket. then receiving the rounded cross-head 2t, as i*-'llnstrated at the left in Fig. (5. When this occurs the line of direction of the force applied to the the car, tilting it as shown in l ig. 6.

the right-hand thrust-bar will then be out- The thrust-bar will fallback of the pivot 28, and consequently the joint of the thrustbar will not break and the power of the plunger will operate to lift that side of This operation is not prevented by the corresponding devices at the oppositeside of the car for the following reason: lVhen the thrust-bar 26 is carried downward by the tilting'of the car toward the right, the lugs 22 of the plungerrorl :20" will engage the outer portion of the head 32*, as shown in Fig. 7, and as the. line of direction of the force applied to the members 26-27 of side the pivot 28, the joint will be broken and the members 2(l"27 will fold, as shown at the right in Fig- 6. Th s operation will continue. as the car bed tilts until the parts reach the position in Fig. 9, which illustrates the position of the car bed hen tilted to the'limit of its movement. Atthis time, as will be noted, the thrust-bar at the left-hand side of the car will have been raised so that the head will be lifted out of engagement with the cross-head 21. Also it should be noted that during tlt'e tilting operation the head 32 will rock upon the cross-head'2l" so that at the completion of the tilting operation the lower inner portion of the head 32 will overlie the lugs 23 as shown in Fig. 9. 'To restore the car bed to its horizontal position, power is applied to the cylinder 18, causing its plunger 19 to rise, whereupon the lugs 23 will engage the lower innersurface of the head 32, the opposite surface of such head engaging the under side of the car bed in the manner shown in Fig. 1.0. As the plunger 19 rises the car bed will accordingly be rocked in the opposite d rection and restored to its horizontal position. When the plunger 15) is withdrawn into its cylinder, the'n'iemhers 26"2T of the thrust-bar at that side of the car will be restored by gravity to their alined position, as shown in Fig. 5. 35 indicates a cover-plate for the plunger 19, said plate having an opening for the passage of the plunger-rod '20. hen the plunger-rod rocks, the plate 35 is moved from side to side upon the upper end of the plunger so that it at all time covers the. upper 'end of said plunger andpreventsdirt from. falling into it when t e bed is dumped as well as at other times.

In addition to performing the operations above described, the plungers 1919= also operate the locking mechanism bv which the car bed is held in operative position and is prevented from tipping beyond such posiiion when restored after dumping. This locking mechanism will now be described.

36 indicates a rock-shaft 'exten'ding longitudinally of the car, slightly at one side-of the center thereof, as shown in the drawings, I

said shaft being mounted in suitable bearings preferably provided in thepedestals 14. Said rock-shaft. carries two arms 37 which project laterally at opposite sides of the links 24., as shown in Fig. 9. The outer ends of such arms 37 are provided with pins 38 which are adapted to be engaged by hooks 39 provided at the lower ends of swinging arms 40. lhese arms are mounted intermediately upon pivots 41 secured to the links 24. respectively, as shown in Figs.

I the under body of the car. '47 indicates a 4, 5 and 9. The arrangement ofthese parts is such that when the car bed is in its normal position and the plungers are retracted, the books 39 will lie under the pins 38, but will be disconnected therefrom, as shown in Fig. 5. lVhenthe plunger 19 is projected, the links 24 will he swung upward carrying the arms with them, whereupon the hooks 39 will engage the pins 38 and rock the arms 37 upward. as shown in Fig; 6, thus rocking the roclrshaft This rocking of the rockh tt operates to release certain locking delmreina'lter described by which the bed is prevented from tilting. 42 indicates arms carried by the rock-shaft 36 adjacent to the ends'of the car, each of said arms being connected by a link 43 with a lever 44. Each of said levers is provided with a book 45 at its lower end, as shown in Fig. 2, and is pivotally mounted at 46 on pivot connecting the link 43 with the arm 1 .2, and 48 indicates apivot connecting said link with the lever 44. 49 indicates a lug'at the back of the hook 45. The hook 45 is adapted to engage the inner end 50 of a lever mounted upon a pivot 52 near the side of the car body, as shown in Figs. 1 and 2. The lever 51 is'so shaped that its weight will normally swing the portion 50 thereof loi-vard the center of the car, the opposite and of lever swinging downward and oiihvard into the position shown in Fig. l.

The outer end of said lever is connected by a chain 53, or other flexibleconnection. with 'the side of the car bed. The length of this i such that when the car bed and it or i are respectively in their normal positions the chain 53 will be substantially taut. At this time the inner end 50 of the lever 51 will be in engagement -with the The corresponding position of the :he opposite side of the car is shown -i'ght in Fig. 2. It will be apparent from the foregoing description that when aft/HQ is rocked by the projection lung" r 1-9, the arms 42 at the ends of said rock-shaft, by their upward movement,

will swing the hooked levers 44 at that. side of the car about their pivots 46 so as to move them out. of s .ngagemcnt with the two locking levers 51 at that side of the car, this operation being indicated irr part bydotted lines at the left in Fig. 1. Thisleaves ed, as the rock-shaft 36 is not rocked, and

consequently the right-hand side of the car remains locked. As it is necessary that the locking devices at the right-hand side shall remain operative during the restoration of the car bed to its horizontal position by the projection of the plunger 19, it is of course necessary that the hooks 39 be temporarily moved out of position to engage the arms 37, and this is effected by the pivot 28, the ends of which project far enough beyond the sides of the thrust-bar so as to be adapted to engage the upper ends of the arms 40 and move the hooks 39 out of position to engage the pins 38, at the end of the dumping operation, as shown in Fig. 9. It follows that when the parts are in the position shown in said figure, when. the plunger 19 is projected to restore the car bed to its horizontal position. the books 39 will be idle and will not operate the arms 37, and consequently the locking devices at the right-hand side of the car will remain operative to prevent the bed from being i moved beyond its horizontal position. As the car bed is righted, the thrustbar at the high side thereof will move downward until its head 32 again engages the cross-head 21, and consequently the plunger 19 may be used to cushion the bed during its righting movement by allowing the fluid therein to engagement with the lug 49 by which it is guided into engagement with thehook 45, which then occupies a position corresponding with that of the hook 45* illustrated at the right in Fig. 2.

All the parts perform their several funo- I tions automatically when power is applied to project either plunger either to dump the car or to right it.

I wih it to be understood that my invention is not limited to the specific construction shown and described, except in so far as it is particularly claimed.

That which I claim as my nvention, and desire to secure by Letters Patent, is,

1'. In. dump-car, the combination with a. suitable support and a bed adapted to tilt to discharge its load, of a thrust bar pivotally connected with the car at one side-of the axis thereof and depending therefrom, and laterally movable power-operated means mounted on said support and normally disconnected from said thrust-bar, said poweroperated means being adapted to operatively engage the lower end portion of said thrustbar for tilting the ear to dump the same.

2. In a dump-car, the combination with a suitable support and a bed adapted to tilt to discharge itsload at either-side of said support, of a folding thrust-bar comprising members movable into and out of longitudinal alinement with each other, one of said members operatively engaging theear bed at one side of the axis thereof, and poweroperated means adapted to engage the other men]! or while'said members are alined, to move the same endwise for tilting the car bed.

3. In a dtunprar, the combination with a suitable support and a bed adapted to tilt to dischargeits load at either side of said support, of a folding thrust-bar comprising .jointed members movable into and out of longitudinal alinement with each other, one of sa d members being pivotally connected with the car bed at one side of the axis thereof, and power-operated means adapted to engage the other member While said,

members are alined, to move the sameend wise-for tilting'the car bed. i

4. In a dump-car, the combination with a suitable support and a bed adapted to tilt to discharge its load at either side of said support, of a folding thrust-bar comprising jointed memb'ersmovable into and out of longitudinal alinement with each other, one of said members being pivotally connected with the car bed at one side of the axis thereof, power-operated means adapted to engage the other member, while said members are alined, to move the/same endwise jifor tilting the car bed, and-means for guiding said thr-usbbar.

5, In a dump-car, the combination with'a suitable support and a bed adapted to tilt todiseharge its load at either side of said support; of a folding-thrust-bar comprising jointed members, one of said members being pivotally connected with the car bed" at one sideof the axisthereof, powenopcr ated means adapted to engage the other member While said members are alined, to more the same endwise for tilting the car had,- and a link pivoted to said support and connected with .said, thrust-bar for guiding the/same.

6. In a dump-car, the combination with a suitable support and a bed adapted to tilt to' discharge its load at either side of said support, of a folding thrust:bar comprising jointed members, one of SflId members bemg ,pivotally connected with the ear bed at one side of the axis thereof, power-operatedatirelv engaging the our bed at one side of the axis thereof, and a swinging plungerrod adapted to engage the other number while said members are alined, to more the same cndwise for tilting the car bed,

8. In a dump-car, the combination with a suitable support and a bed adapted to tilt to discharge its load at either side of said support, of a folding thrust-bar comprising jointed members, one of said members oper ativelv engaging the car bed at one side of the axis thereof; a swinging plunger-rod adapted to engage the other member while said members are alined, to more the same endwise for tilting the ear bed, and means for guiding said plunger-red.

9. In a dump-car, thecombination with a suitable support. and a bed adapted to tilt to discharge its load at either side of said support, of a folding thrust-bar comprising jointed members, one of said members operatively engaging the car bed at one side of the axis thereof, a swinging plungtw-rod 1adapted, to engage the other member while saidni'embers are alined, to move the same eudivise for tilting the ear bed, and a swinging link pivoted to said support and connected with said plunger-rod for guiding the same.

10. In a dump-car, the combination with a suitable support and a bed adapted to tilt to dischargeits load at either side of said support, of a vfolding thrust bar eonn'n'ising jointed members, one of said members being pivotal'ly connected with the car bed at one side of the axis thereof, the other l-i'iember side of the axis thereof, the other member having a'head provided with a bearing, a

swinging plunger-rod adapted to engage said bearing to move said thrust-bar endwise, and a link for guiding said plungerrod.

12. In a dump-car, the eoin'binationwith a, suitable support and abed adapted to tilt having-a head provided with a bearing, a

-swinging plunger-rod adapted to engage said bearing to move said. thrust-bar endwise, a link for guiding said plunger-rod, and means for guiding said thrust-bar.

13. In a dump-car, the combination with a suitable support and a bed adapted to tilt to discharge its load at either side of said support, of a folding thrust-bar at each side of the bed, each of said thrust-bars comprising jointed members movable into and out of longitudinal alinementwith each other, one of said members being pivoted to' the ear bed at one' side of the axis thereof, and power-operated devices at opposite sides of the car adapted to engage said thrust-bars to tilt the bed, and arranged to fold the thrust-bar at the side of the bed which is lowermost when the car-bed is tilted in either direction.

14. In a dump-ear, the combination with a suitable support and a bed adapted to tilt to discharge its load at either side of said support, of a folding thrust-bar at each side of the bed, each of said thrust-bars comprising jointed members movable into and out of longitudinal ialinement with each other, one of said members being pivoted to the car bed'at one side of the axis thereof, and plunger-rods at opposite sides of the car adapted, when operated to tilt the bed to engage the appropriate thrust-bar and move it endwise with the members thereof in alinement, and operating when in their normal position to cause the appropriate thrust.- bar to fold When the car-bed is tilted.

15. In a dump-car, the combination with a suitable support and a bed adapted to tilt to discharge its load at either side of said support, of folding'thrust-bars at opposite sides of the car, said thrust-bars being comosed of jointed members, the upper memers of saidthrust-bars being connected to the car bed at opposite sides of the axis thereof, and plunger-rods at opposite s des of the car movable into engagement With the lower members of said thrust bars respee ,ti'vely, said plunger-rods being movable lat erally With reference to the lower members of said thrust-bars, ,Whereby said plungerrods will. act upon said thrust-bars either in a line falling at one side of the hinge there-- of or on the opposite side in a direction tI 1CllI1g to fold the members thereof de pending upon Whether said plunger rods are acting to dump the our bed or to restore it to normal position. v 16. In a drimpbar, the combination with asuitable support and a bed adapted totilt todischarge its load at either side .of said support, of folding thrust-bars atopposite sides of the ear, said thrust-bars being comeposed ofjointed members, the upper members of said thrust-bars being connected to the car bed at opposite sides of the axis thereof, plunger-rods at opposite 'sidesjof the car movable into engagement with the lower members of said thrust-bars respeetively, said plunger-rods being movable latterally with reference to the lower members of said thrust-bars, whereby said plungerrods Will act upon said thrust-bars either in a line falling at one side of the hinge thereof or on the opposite side in a direc'- tion tending to fold the members thereof depending upon vvhether said plunger rods are 'acting to dump the car bed or to restore it ihereof, plunger-rods at opposite sides of the car movable into engagement with the lower members of said thrust-bars respectively, said plungerrods being movable laterally with reference to the lower members of said thrust-bars, whereby said plungerrods will act upon said thrust-bars either in a line falling at one side of the hinge thereof or on the opposite side in a direction tending to fold the members thereof depending upon Whether said plunger rods are acting to dump the car bed or to restore it to normal position, means for guid- 10 5 ing said plunger-rods, and means for guiding said thrust-bars.

18. In a dun'ipcar, the combination with a suitable support and a bed adapted to tilt to discharge its load at either side of said 110 support, of a folding thrust-bar comprising jointed members, one of said members operatively engaging the car bed at one side of the axis thereof, power-operated means adapted to engage the other member While said members are alined, to move the same endwise for tilting the ear bed, means for locking the bed in its normal position, and

adapted to engage the other member While said members are alined, to move the same gravity.

cndivise for tilting the car bed, locking means at opposite sides of the car, for holdmg thebed in its normal position, and mechanism operated by said power-operated means for releasin the locking means at the side of the bed to be elevated in tilting the same.

20. In a d amp-ear, the combination with a. suitable support and a bed adapted to tilt to discharge its load, of a eyliinlrical plunger open at its upper end, a swinging plunger-rod operating in said plunger, means operated by ,said plunge-anal for tilting the bed, and a cover for said plunger.

iZLYln a dumpa-ar, the combination with a suitable support and a bed adapted to tilt to discharge its load, of a cylindrical plunger open at its upper end, a laterally-swing ing plungertal operating in said plunger, means operated by said plunger-rod for tilting the bed, and a transversely-sliding cover for said plunger:

A dun'f i T, comprising a suitable support.,-a br'lnnounted upon said support and adapted to tilt to discharge its load,'a locking lever fulcrumcd upon said support between its ends, means constantly connect ing one end portion of said lever with the car bed at one side of the. fulcrum thereof, and locking means adapted to engage said locking lever at the opposite side ofthe fulcrum theieof for locking the bedin "its normal position.

23. A dump-car. comprising a suitable support, a bed mounted upon said support and adapted totilt to discharge its load, a locking lever fulcrun'ied upon said support between its ends, means constantly connecting one end portion of said lever with the car bcdat one side of the fulcrui-n thereof, locking means adapted to engages-aid locking lever at the opposite side of the fulcrum thereof for locking the bed in its normal position, and power-operated means for releasing said locking lever.

2L X dump-car, comprising a suitable sup ort, a bed mounted upon sa.id -support and adapted to tilt to discharge its load,

a locking lever fulcrumed upon said support between its ends, ITLOtlTiS constantly co. iuecting one end portion'of said lever with the car bed at one side of the fulcrum thereof, and locking means adapted to engage said locking lever atthe opposite side of the fulcrum thereof for locking the bed in its normal position, said locking leve-rdming arranged to return to its locking position by A dump-car, comprising a'suitable support, a bed mount-ed upon said support and adapted to tilt to diseliargeits load, a'

locking lever fulcrnmed upon said support between its ends. nn-ans constantly connecting one end portion of said lever with the ar lied at one side of the fulcrum thereof.

support, a bed mounted upon said support and adapted to tilt to discharge its load, a

locking lever fulcrmned upon said support between its ends, means constantly connect ing one end portion of said lever with the car bed at one side of the fulcrum thereof, and a latch mounted on said support and engaging said locking lever at the opposite side of the fulcrum thereof for holding the same.

in operative position, said locking lever be ing arranged to return to its locking position by gravit 27. A dump-car, comprising a suitable support, a bed mounted upon said support and adapted to tilt to discharge its load, a locking lever fulcrmned upon said support between its ends, means constantly connecting one end portion of said lever with the our bed at one side of the fulcrum thereof, a latch mounted on said support and engaghg said locking lever at the opposite side of the fulcrum thereof for holding the same in operative position, and power operatcd means for releasing said locking lever, said locking lever being arranged to locking position by gravity.

28. A. dump-car, comprising a suitable and arranged totilt to discharge its lead,-

return to its relcas-' a locking lever fulerumcd between its ends upon said support and disposed transversely thereof, means constantly connecting the outer end portion of said lever with the bed at one side'of the axis thereof, and means mounted on said support and engaging the inner end portion of said lever for locking the same in operative position.

29. A dump-car, comprising a suitable support, a ,bed mounted upon said support and arranged to tilt to discharge its load, a

locking lever fulcrumed between its endsupon said support and disposed transversely thereof, means constantly connecting the outer end portion of said lever with the bed at one side of the ax'is thereof, and means mounted on saidsupport and engaging the inner end portion of Said lever for locking the same in operative position, the outer, end portion of said lever being heavier than the inner end portion thereof, whereby it will return by gravity to its normal position.

30. A dump-car, con'iprising a suitable support, a car bed mounted thereon and adapted. to tilt in opposite directions to discharge itsload, a folding thrust-bar depending from the car bed at one side of the tfls ther of and adapt d to move transwersely of the axis of the car bed out of the way to permit the car bed to be tilted toward one side, and power-opcrated means cooperating with said thrust-bar to tilt the car bed toward the opposite side.

31. A lump-car, comprising a suitable support, a car bed mounted thereon and adapted to tilt in opposite directions to discharge its load, boner-operated means mounted on said support for tilting the ear bed, and a thrust-bar carried by said bed and cooperating with said power-operated means, said thrust-bar comprising a plurality of members" movable laterally with relation to the axis otthe '51- bed into or out-of operative position.

32. A dump-car, comprising a suitable support, a car bed mounted thereon. and adapted to tilt in opposite directions to discharge its load, power-operated means mounted on said support for tilting the car bed, and a thrust-bar carried by said bed and cooperating With said power-operated means, said thrust-barcomprising members movable laterally with reiation to the axis of the car bed into or out of longitudinal alineinent with each other.

33. A dump-ear, comprising a suitable support, a car bed mounted thereon and adapted to tilt in opposite directions to discharge its load, power-operated aneans ,inounted on said support for tilting the our bed, and a tl'irust-bar carried by said bed and cooperating with said power-operated means, said thrust-bar comprlsing members connected together by a knuckle joint and movable into or out of longitudinal alinement with each other.

34. A dump-car, comprising a suitable support, a can bed mounted thereon and. adapted to tilt in opposite dn-eetlons to dis to discharge its load at either side of said support, 01' a folding thrust-bar comprising members movable into or out of longitudinal alincn'ient with each other, one of said members ormratively engaging the car bed at one side of the axis thereof, and a swinging plunger rod adapted to engage the other nien'iber while said members are alined to more the same endwise ior tilting the car bed.

30. In a dump-car, the combination with a suitable support and a bed adapted to tilt to disclnirg'e its load at either side of said upport, of a folding thrust-ha r comprising members movable into or out of longitudinal alincn'ient with each other, one of said members operativcly engaging the car bed at one side of the axis thereof, a swinging plunger rod adapted to engage the other member while said members are alinedlo move the same endwise for tilting the car bed, and means for guiding said plunger rod.'

JAY'BYRON nnonns. 

